CVE-2026-40369

Esta es una reescritura y resumen del análisis técnico público de VoidSec sobre CVE-2026-40369, con un diagrama de flujo añadido y notas defensivas para mi propia comprensión. Todos los detalles técnicos centrales provienen de su investigación. No realicé ingeniería inversa independiente sobre es...

CVE-2026-80652

A flaw was found in the Linux kernel's Cryptographic Co-processor CCP driver. A local attacker could trigger a kernel crash, leading to a denial of service DoS, by providing a zero-length certificate chain buffer during a Platform Dynamic Hardware PDH export operation. This issue specifically...

libevent: Libevent: Memory corruption due to use-after-free

A flaw was found in Libevent, an event notification library. A use-after-free vulnerability exists in the evbufferaddbufferreference function when it processes an output buffer with a zero length. This can lead to a dangling pointer, which an attacker could exploit to cause memory corruption or...

CVE-2026-80652

In the Linux kernel, the following vulnerability has been resolved: crypto: ccp - Treat zero-length cert chain as query for blob lengths When handling a PDH export, treat a zero-length userspace cert chain buffer as a request to query the length of the relevant blobs. Failure to account for the...

UBUNTU-CVE-2026-80652

In the Linux kernel, the following vulnerability has been resolved: crypto: ccp - Treat zero-length cert chain as query for blob lengths When handling a PDH export, treat a zero-length userspace cert chain buffer as a request to query the length of the relevant blobs. Failure to account for the...

CVE-2026-80652 crypto: ccp - Treat zero-length cert chain as query for blob lengths

In the Linux kernel, the following vulnerability has been resolved: crypto: ccp - Treat zero-length cert chain as query for blob lengths When handling a PDH export, treat a zero-length userspace cert chain buffer as a request to query the length of the relevant blobs. Failure to account for the...

EUVD-2026-67528

In the Linux kernel, the following vulnerability has been resolved: crypto: ccp - Treat zero-length cert chain as query for blob lengths When handling a PDH export, treat a zero-length userspace cert chain buffer as a request to query the length of the relevant blobs. Failure to account for the...

CVE-2026-80652

CVE-2026-80652 affects the Linux kernel 's AMD SEV/CCP driver (drivers/crypto/ccp/sev-dev.c ). When handling a PDH export, a zero-length userspace cert chain buffer is not treated as a blob-length query, causing a BUG_ON() crash at arch/x86/mm/physaddr.c due to a physical-address lookup on ZERO_S...

CVE-2026-63381

A flaw was found in Libevent, an event notification library. A use-after-free vulnerability exists in the evbufferaddbufferreference function when it processes an output buffer with a zero length. This can lead to a dangling pointer, which an attacker could exploit to cause memory corruption or...

kernel: io_uring/rsrc: reject zero-length fixed buffer import

A flaw was found in the Linux kernel's iouring subsystem. A local attacker can exploit a vulnerability in the ioimportfixed function by importing a zero-length fixed buffer. This can lead to an out-of-bounds read from slab memory, potentially resulting in information disclosure or a denial of...

Exploit for Untrusted Pointer Dereference in Microsoft

CVE-2026-40369: Defensive Analysis of the 12-Byte Windows Kern...

CLSA-2026-1778772686 libsoup: Fix of CVE-2026-2369

CVE-2026-2369: fix integer underflow in sniffunknown on zero-length buffer that caused an out-of-bounds read in the content sniffer...

CLSA-2026-1778662869 libsoup: Fix of CVE-2026-2369

CVE-2026-2369: fix integer underflow in sniffunknown on zero-length buffer that caused an out-of-bounds read in the content sniffer...

PT-2026-38307

Name of the Vulnerable Software and Affected Versions fast-jwt versions prior to 6.2.4 Description An authentication bypass exists in the asynchronous key-resolver flow. When an application's key resolver returns an empty string '' or a zero-length Buffer, the software converts this to a...

CLSA-2026-1777659767 libsoup: Fix of CVE-2026-2369

CVE-2026-2369: fix integer underflow in sniffunknown on zero-length buffer that caused an out-of-bounds read in the content sniffer...

CVE-2026-43006

A flaw was found in the Linux kernel's iouring subsystem. A local attacker can exploit a vulnerability in the ioimportfixed function by importing a zero-length fixed buffer. This can lead to an out-of-bounds read from slab memory, potentially resulting in information disclosure or a denial of...

CVE-2026-43006

In the Linux kernel, the following vulnerability has been resolved: iouring/rsrc: reject zero-length fixed buffer import validatefixedrange admits bufaddr at the exact end of the registered region when len is zero, because the check uses strict greater-than bufend imu-ubuf + imu-len. ioimportfixe...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from bvec skipping a logical out-of-bounds read during a zero-length fixed buffer import in iouring rsrc, which...

CVE-2025-66037

OpenSC is an open source smart card tools and middleware. Prior to version 0.27.0, feeding a crafted input to the fuzzpkcs15reader harness causes OpenSC to perform an out-of-bounds heap read in the X.509/SPKI handling path. Specifically, scpkcs15pubkeyfromspkifields allocates a zero-length buffer...

CVE-2025-66037

OpenSC is an open source smart card tools and middleware. Prior to version 0.27.0, feeding a crafted input to the fuzzpkcs15reader harness causes OpenSC to perform an out-of-bounds heap read in the X.509/SPKI handling path. Specifically, scpkcs15pubkeyfromspkifields allocates a zero-length buffer...